UK's Best Selection of Adventure Motorcycle Travel Clothing, Equipment and Accessories

Skene Designs IQ-275 Intelligent Lighting Controller (smart dimmer)

Skene Designs IQ-275 Intelligent Lighting Controller (smart dimmer)

(Note: The IQ-275 replaces the IQ-175. It is easier to install and supports higher-power lamps. The web page and diagrams fo [Read more ...]


Product code: 101372

Manufacturers code: 63-9207

Brand: Skene Designs

Skene Designs IQ-275 Intelligent Lighting Controller (smart dimmer)

(Note: The IQ-275 replaces the IQ-175. It is easier to install and supports higher-power lamps. The web page and diagrams for the IQ-175 may be found here: IQ-175. )

The IQ-275 Intelligent Lighting Controller from Skene Design allows you to quickly and conveniently set the brightness of your auxiliary LED or incandescent lights to match riding conditions.

Often auxiliary lights are too bright or have too wide a beam pattern to operate at full power during the day or under certain road conditions. With Skene Design’s innovative intelligent lighting controller you can pre-program several different brightness settings and with the flick of a switch immediately select the desired brightness. There’s no fumbling with a knob or a wireless remote trying to guess the best level.


The IQ-275 has been designed by a motorcyclist for motorcyclists. It allows you to quickly and safely select just the right brightness level for you auxiliary lights without having to look at a knob to turn or read a screen: you simply flick a 2 or 3 position switch or double tap a button.
It has two possible modes of operation depending upon the type of lights you have, driving or fog lights. In Driving Light mode, when your motorcycle’s high beam is off the controller will set the auxiliary lights to one of several user-programmed brightness settings depending upon the position of a brightness switch. When the motorcycle’s high beam is activated, the controller overrides the switch setting and sends full power to the lamps. In Fog Light mode, the same brightness selection is used but when the high beam is activated the auxiliary lights are turned off.

Multiple brightness settings are available with the use of an optional, customer-provided switch. If a two-position toggle switch is used, two brightness settings may be selected in addition to the high beam override. If a three-position center-off toggle switch is used, three brightness settings may be selected. Each of these settings is adjustable from off to full brightness in 10% steps, providing very flexible and convenient control over the lamps’ brightness. You can even use a momentary-contact pushbutton switch to toggle back and forth between two brightness levels. (The turn signal cancel switch on the right handlebar on BMW’s can be used for this purpose.) If no switch is used, the lamps will come on at a single, programmable brightness level when the high beam is off.

See the wiring diagram below for details.

The controller has two identical channels, each of which can power a 144 watt/12 amp load. The two channels can be connected in parallel to power a combined load of 288 watts/24 amps. This is the recommended configuration if unequal loads are to be driven, as it will balance the loads over both channels.

The positive connection from the controller can be connected through a fuse directly to the vehicle’s battery. No separate relay is required, as the controller performs this function. This simplifies wiring, eliminates extra components, and improves reliability compared to the traditional relay wiring harness.

ALERT! feature - Note we do not stock the IQ275A as the Alert feature is illegal in the UK

Installation is quick and easy, and the controller can be used with almost any motorcycle.
A comprehensive installation guide and all necessary connectors are included.

Note 1: The 2014+ BMW R1200GS with LED headlight option provides no access to the high beam wire, so a separate switch is required to select high beam override and to program the unit. The model with incandescent headlights works normally.

Note 2: Some LEDs have 3 wires rather than 2, where the third wire is a dimmer input. These include :

  • Denali dual-intensity DX and D2 models
  • Cyclops Optimus
  • VisionX Optimus

These lights require a slightly different wiring method and shown here:

Note 3: While the great majority of aftermarket LED lights can be used with the IQ-275, a few are designed such that they will not operate properly with a dimmer. These include:

  • Rigid Industries D Series Lamps (D2 and Dually) and SR models. Models manufactured after 7/2013 are no longer able to support the IQ-275 or any other dimmer due to a design change. Other Rigid LEDs work with our controller.
  • KTM 990 Supermoto Auxiliary LED Light Kit, part number: 62014910033.
  • Denali D4: While early Denali D4 LED’s were fully compatible with the IQ-175 & IQ-275, the current model of this lamp is no longer able to support the IQ-275 or any other dimmer due to a design change. Other Denali LEDs work with our controller.

Skene Design provides an unconditional 30 day money back guarantee, and a 2 year warranty in the event of any defect in the product.


Programming - Click Here

Wiring Diagram - Click Here

Instructions - Click Here

Video showing programming -

Video showing operation -

 Verification Image


Having tried all sorts of different ways to dim the very bright LED lights I fitted to my bike, the Skene IQ-275 is the only one that worked. Easy to install and gives me three intensity levels. Perfect for having 9,000 lumens to light up the road, which I can control for night riding in towns.There is a longer review here -
Flies on the Visor